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Develon DX420LC-7
Configuration: Standard arm (US15): 6,700 mm boom, 3,250 mm arm, 1.92 m³ (2.51 yd³) SAE bucket, 8,000 kg counterweight, 800 mm TG shoes; Tier 4 Final
25 sourced values · Sources: DEVELON DX420LC-7 Crawler Excavator Spec Sheet, 25903_005_D092925, ©2025 HD Hyundai Infracore (US units, metric in parentheses); linked from https://na.develon-ce.com/en/construction-equipment/crawler-excavators/DX420LC-7-crawler-excavator. Retrieved 2026-10-25
Dimension diagram
| A | Overall length | 11,740 mm |
| B | Overall height | 3,210 mm |
| C | Track length on ground | 4,250 mm |
| D | Ground clearance | 583 mm |
| E | Overall width | 3,550 mm |
| F | Track gauge / tread | Not published |
| G | Shoe / track width | 800 mm |
Weights
| Spec | Value | Source |
|---|---|---|
| Operating weight | 42,877 kg | Published: 42,877 kg DEVELON DX420LC-7 Crawler Excavator Spec Sheet, 25903_005_D092925, ©2025 HD Hyundai Infracore (US units, metric in parentheses); linked from https://na.develon-ce.com/en/construction-equipment/crawler-excavators/DX420LC-7-crawler-excavator. Retrieved 2026-10-25Standard arm (US15, 800 mm shoes), 94,527 lb; US20 (900 mm shoes) 46,900 kg; long arm (US30) 47,100 kg. |
Dimensions
Undercarriage / tires
| Spec | Value | Source |
|---|---|---|
| Undercarriage type | Crawler (steel tracks), fixed gauge | Published: Crawler (steel tracks), fixed gauge DEVELON DX420LC-7 Crawler Excavator Spec Sheet, 25903_005_D092925, ©2025 HD Hyundai Infracore (US units, metric in parentheses); linked from https://na.develon-ce.com/en/construction-equipment/crawler-excavators/DX420LC-7-crawler-excavator. Retrieved 2026-10-25 |
| Track rollers / shoes per side | 9 lower rollers, 2 upper rollers, 50 shoes (links) per side | Published: 9 lower rollers, 2 upper rollers, 50 shoes (links) per side DEVELON DX420LC-7 Crawler Excavator Spec Sheet, 25903_005_D092925, ©2025 HD Hyundai Infracore (US units, metric in parentheses); linked from https://na.develon-ce.com/en/construction-equipment/crawler-excavators/DX420LC-7-crawler-excavator. Retrieved 2026-10-25 |
Ground pressure
| Spec | Value | Source |
|---|---|---|
| Ground pressure | ≈ 56.9 kPa | Published: 0.58 kgf/cm² DEVELON DX420LC-7 Crawler Excavator Spec Sheet, 25903_005_D092925, ©2025 HD Hyundai Infracore (US units, metric in parentheses); linked from https://na.develon-ce.com/en/construction-equipment/crawler-excavators/DX420LC-7-crawler-excavator. Retrieved 2026-10-258.2 psi; single value printed (column not stated). |
Engine
Hydraulics
| Spec | Value | Source |
|---|---|---|
| Pump / aux flow | 720 L/min | Published: 720 L/min DEVELON DX420LC-7 Crawler Excavator Spec Sheet, 25903_005_D092925, ©2025 HD Hyundai Infracore (US units, metric in parentheses); linked from https://na.develon-ce.com/en/construction-equipment/crawler-excavators/DX420LC-7-crawler-excavator. Retrieved 2026-10-25Main pumps 2 x 360 L/min (2 x 95.1 gpm). |
| System / relief pressure | ≈ 34.3 MPa | Published: 350 kgf/cm² DEVELON DX420LC-7 Crawler Excavator Spec Sheet, 25903_005_D092925, ©2025 HD Hyundai Infracore (US units, metric in parentheses); linked from https://na.develon-ce.com/en/construction-equipment/crawler-excavators/DX420LC-7-crawler-excavator. Retrieved 2026-10-25Boom/arm/bucket working pressure, normal mode (4,980 psi); power boost 350 kgf/cm². |
Performance
Similar models
| Brand | Model | Operating weight |
|---|---|---|
| Liebherr | R 945 Litronic | 41,600 kg |
| Komatsu | PC390LC-11 | 40,359 kg |
| Komatsu | PC390LCi-11 | 40,359 kg |
| Volvo | EC400 | 39,430 kg |
| John Deere | 380 P-Tier | 38,765 kg |
| Hitachi | ZX350LC-7H SLF | 38,500 kg |
Compare side by side with Liebherr R 945 Litronic and Komatsu PC390LC-11